Forney 71877 Aluminum Oxide 13,300 rpm 4.5 Dia. in. Grinding Wheel 1/4 in. Thick By August 9, 2026 No Comments Used on ferrous materials. For use on right angle grinders. Material: Aluminum Oxide. Maximum Speed: 13300 rpm. Compatibility: Right Angle Grinders. Hand Tools And Tool Accessories. Arbor Type: Type 27. Continue Reading